@article{Hammarström2012,
author = {Hammarström, A. and Annandale, E.},
title= {A conceptual muddle: An empirical analysis of the use of ‘sex’ and ‘gender’ in ‘gender-specific medicine’ journals},
year = {2012},
doi = {10.1371/journal.pone.0034193},
volume = {7},
number = {4},
pages = {34193},
}